 As finally drafted in 1846 his agreement gave him a lease for 21 years of a tract of land extending across the plain ‘six miles in every direction’ from the tributaries of the Avon River.The rental was eight pounds a year.At Port Cooper, the Greenwood brothers squatted for nearly a year without attempting any arrangement with the Māori, and only entered into a lease at Edward Shortland's suggestion after the Māori had begun to threaten them in February 1844.